Zebra PS20 Product Reference Guide

Personal Shopper

PS20

MN-003570-01 Rev A

Product Reference

Guide

for Android ™ 9.0 Pie

2

Copyright

ZEBRA and the stylized Zebra head are trademarks of Zebra Technologies Corporation, registered in many

jurisdictions worldwide. Google, Android, Google Play and other marks are trademarks of Google LLC. All

COPYRIGHTS & TRADEMARKS: For complete copyright and trademark information, go to

www.zebra.com/copyright

.

WARRANTY: For complete warranty information, go to www.zebra.com/warranty

.

END USER LICENSE AGREEMENT: For complete EULA information, go to www.zebra.com/eula

.

Terms of Use

• Proprietary Statement

This manual contains proprietary information of Zebra Technologies Corporation and its subsidiaries

(“Zebra Technologies”). It is intended solely for the information and use of parties operating and maintaining

the equipment described herein. Such proprietary information may not be used, reproduced, or disclosed to

any other parties for any other purpose without the express, written permission of Zebra Technologies.

• Product Improvements

Continuous improvement of products is a policy of Zebra Technologies. All specifications and designs are

subject to change without notice.

• Liability Disclaimer

Zebra Technologies takes steps to ensure that its published Engineering specifications and manuals are

correct; however, errors do occur. Zebra Technologies reserves the right to correct any such errors and

disclaims liability resulting therefrom.

• Limitation of Liability

In no event shall Zebra Technologies or anyone else involved in the creation, production, or delivery of the

accompanying product (including hardware and software) be liable for any damages whatsoever (including,

without limitation, consequential damages including loss of business profits, business interruption, or loss of

business information) arising out of the use of, the results of use of, or inability to use such product, even if

Zebra Technologies has been advised of the possibility of such damages. Some jurisdictions do not allow

the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may

not apply to you.

Revision History

Changes to the original guide are listed below:

Change Date Description

-01 Rev A 07/2019 Initial release.

3

Table of Contents

Copyright ......................................................................................................................... 2

Terms of Use ..................................................................................................................2

Revision History ..............................................................................................................2

About This Guide........................................................................................................ 11

Configurations ............................................................................................................... 11

Notational Conventions ................................................................................................. 11

Service Information ....................................................................................................... 12

Software Versions ......................................................................................................... 12

Getting Started............................................................................................................ 13

Unpacking .....................................................................................................................13

Removing the Screen Protection Film ................................................................... 13

Features ........................................................................................................................ 14

Status LED ....................................................................................................................15

Scan Key ....................................................................................................................... 16

Setting Up the Device ................................................................................................... 17

Charging the Battery ..................................................................................................... 17

Charging Temperature .......................................................................................... 19

LED Status Indicators ............................................................................................ 19

Replacing the Battery .................................................................................................... 20

Compatibility .................................................................................................................21

Battery Comparison ...................................................................................................... 21

Powering on the Device ................................................................................................ 22

Zebra Visibility Services ................................................................................................ 22

Using the Device ......................................................................................................... 24

Home Screen ................................................................................................................ 24

Setting Home Screen Rotation .............................................................................. 25

Table of Contents

4

Status Bar .............................................................................................................. 25

Status Icons .................................................................................................... 26

Notification Icons ............................................................................................. 26

Managing Notifications .................................................................................... 27

Quick Access Panel ........................................................................................ 28

Editing Icons on Quick Settings ...................................................................... 29

Battery Management ..................................................................................................... 29

Monitoring Battery Usage ...................................................................................... 29

Low Battery Notification ......................................................................................... 30

Battery Optimization .............................................................................................. 30

Suspend Mode .............................................................................................................. 30

Transferring Files with a Host Computer via USB ........................................................ 30

Transferring Files .................................................................................................. 30

Transferring Photos ............................................................................................... 31

Disconnect from the Host Computer ..................................................................... 31

Settings........................................................................................................................ 32

Accessing Settings ........................................................................................................ 32

Display Settings ............................................................................................................ 32

Setting the Screen Brightness ............................................................................... 32

Setting Night Light ................................................................................................. 32

Setting Screen Rotation ........................................................................................ 33

Setting Screen Timeout ......................................................................................... 33

Ambient Display .................................................................................................... 33

Setting Font Size ................................................................................................... 34

Setting Display Size .............................................................................................. 34

Setting Screen Saver ............................................................................................ 34

Configuring Screen Saver Settings ................................................................. 35

Setting the Date and Time ............................................................................................ 36

General Sound Setting .................................................................................................. 36

Sound Options ....................................................................................................... 37

Remapping a Button ..................................................................................................... 37

Keyboards .....................................................................................................................38

Keyboard Configuration ......................................................................................... 38

Enabling Keyboards ........................................................................................ 38

Switching Between Keyboards ....................................................................... 38

Using the Android and Gboard Keyboards ............................................................ 38

Editing Text ..................................................................................................... 38

Entering Numbers, Symbols, and Special Characters .................................... 38

Using the Enterprise Keyboard ............................................................................. 39

Numeric Tab ................................................................................................... 39

Alpha Tab ........................................................................................................ 39

Table of Contents

5

Additional Character Tab ................................................................................ 39

Scan Tab ......................................................................................................... 40

Language Usage ........................................................................................................... 40

Changing the Language Setting ............................................................................ 40

Adding Words to the Dictionary ............................................................................. 41

Applications ................................................................................................................ 42

Accessing Apps ............................................................................................................ 45

Switching Between Recent Apps .......................................................................... 45

Battery Manager ........................................................................................................... 45

Camera ........................................................................................................................ 48

Taking Photos ....................................................................................................... 48

Recording Videos .................................................................................................. 49

Photo Settings ....................................................................................................... 50

Front Camera .................................................................................................. 50

Video Settings ....................................................................................................... 50

Front Camera .................................................................................................. 50

Cradle Firmware Updater ............................................................................................. 52

Sending the Firmware File Using Intents .............................................................. 53

Send an intent using ADB: .............................................................................. 53

Send an intent using MDM .............................................................................. 54

Send the file using the Recovery Method ....................................................... 54

Send an Airwatch intent .................................................................................. 54

Send a SOTI intent ......................................................................................... 54

Cradle Utility ................................................................................................................. 55

Controlling the Cradle ............................................................................................ 55

Setting the Cradle .................................................................................................. 56

Performing Cradle Diagnostics .............................................................................. 56

Viewing Cradle Information ................................................................................... 57

Smart Cradle Configuration ......................................................................................... 58

Support .................................................................................................................. 58

Prerequisites/Assumptions .................................................................................... 58

Error Prevention .................................................................................................... 58

Accessing CradleSmartConfig .............................................................................. 59

Using CradleSmartConfig ...................................................................................... 59

Auditing ................................................................................................................. 62

Quick Audit ...................................................................................................... 62

Full Audit ......................................................................................................... 62

Wall Map Examples ............................................................................................... 63

DataWedge Demonstration .......................................................................................... 64

Scanner Selection ................................................................................................. 64

Device Central ............................................................................................................. 65

Table of Contents

6

Scan and Pair Tab ................................................................................................. 65

Scan and Pair ................................................................................................. 65

Scan to Pair .................................................................................................... 66

Manually Pairing ............................................................................................. 66

Peripherals Tab ..................................................................................................... 66

My Device Tab ...................................................................................................... 66

Unpairing a Peripheral ........................................................................................... 66

Paging an RS6000 Ring Scanner ......................................................................... 67

Diagnostic Tool ............................................................................................................ 68

Settings ................................................................................................................. 69

Battery Test Information ........................................................................................ 69

GPS Test Information ............................................................................................ 70

System Test Information ....................................................................................... 70

WLAN Test Information ......................................................................................... 70

WWAN Test Information ........................................................................................ 70

Bluetooth Test Information .................................................................................... 70

Enterprise Browser ...................................................................................................... 71

Enterprise Browser Application ............................................................................. 71

RxLogger ......................................................................................................................72

RxLogger Configuration ........................................................................................ 72

Configuration File .................................................................................................. 72

Enabling Logging ................................................................................................... 72

Disabling Logging .................................................................................................. 72

Extracting Log Files ............................................................................................... 73

Backup .................................................................................................................. 73

RxLogger Utility ..................................................................................................... 73

Initiating the Main Chat Head .......................................................................... 73

Removing the Main Chat Head ....................................................................... 73

Viewing Logs ................................................................................................... 73

Removing a Sub Chat Head Icon ................................................................... 74

Backing Up In Overlay View ........................................................................... 74

Sound Recorder ........................................................................................................... 75

Data Capture................................................................................................................ 76

Introduction ................................................................................................................... 76

Scanning Considerations .............................................................................................. 76

Scanning Bar Codes ..................................................................................................... 76

Scanning Tips ................................................................................................. 78

Decode Screen Notification ................................................................................... 78

Hands Free Scanning ................................................................................................... 78

Settings ................................................................................................................. 78

Scanning Mode ..................................................................................................... 79

Table of Contents

7

Proximity Range .................................................................................................... 79

DataWedge ................................................................................................................... 80

Enabling DataWedge ............................................................................................ 80

Disabling DataWedge ............................................................................................ 80

Decoders ............................................................................................................... 80

Wireless ....................................................................................................................... 83

Wireless Local Area Networks ...................................................................................... 83

Accessing Settings ........................................................................................................ 84

Connecting to a Wi-Fi Network ..................................................................................... 84

Removing a Wi-Fi Network .................................................................................... 84

WLAN Configuration ..................................................................................................... 85

Configuring a Secure Wi-Fi Network ..................................................................... 85

Manually Adding a Wi-Fi Network ......................................................................... 86

Configuring for a Proxy Server .............................................................................. 86

Configuring the Device to Use a Static IP Address ............................................... 87

Wi-Fi Preferences .................................................................................................. 88

Additional Wi-Fi Settings ....................................................................................... 88

Wi-Fi Direct ............................................................................................................ 89

Wi-Fi Advanced Features ...................................................................................... 89

Bluetooth ....................................................................................................................... 90

Adaptive Frequency Hopping ................................................................................ 90

Security ................................................................................................................. 90

Bluetooth Profiles .................................................................................................. 91

Bluetooth Power States ......................................................................................... 91

Bluetooth Radio Power .......................................................................................... 92

Enabling Bluetooth .......................................................................................... 92

Disabling Bluetooth ......................................................................................... 92

Discovering Bluetooth Device(s) ........................................................................... 92

Changing the Bluetooth Name .............................................................................. 93

Connecting to a Bluetooth Device ......................................................................... 93

Selecting Profiles on the Bluetooth Device ........................................................... 93

Unpairing a Bluetooth Device ................................................................................ 93

Cast ............................................................................................................................... 94

Accessories................................................................................................................. 95

Accessories ...................................................................................................................95

Installation of the Single Slot Cradle ............................................................................. 98

Charging Modes .................................................................................................... 98

Standard Charging Mode ................................................................................ 98

Fast Charging Mode ....................................................................................... 98

Table of Contents

8

Mounting the Single Slot Cradle on a Dispenser Wall ........................................... 98

Wiring .................................................................................................................. 101

Assembly ............................................................................................................. 102

System Cabling ................................................................................................... 103

Installation of the Three Slot Cradle ............................................................................ 105

Mounting Configurations ..................................................................................... 105

High Density Configuration ........................................................................... 105

Super High Density Configuration ................................................................. 106

Desktop Configuration .................................................................................. 107

Charging Modes .................................................................................................. 107

Standard Charging Mode .............................................................................. 108

Fast Charging Mode ..................................................................................... 108

Mounting the Three Slot Cradle on a Dispenser Wall ......................................... 109

Releasing the PS20 from the Charging Cradles ......................................................... 114

Software Release Using the Menu ...................................................................... 115

Software Release Using the Cradle Utility .......................................................... 115

Manual Release Using a Release Key ................................................................ 115

Manual Release of the PS20 from the Single Slot Cradle ............................ 115

Manual Release of the PS20 from the Three Slot Cradle ............................. 116

USB Cable Battery Cover ........................................................................................... 117

Installing the USB Cable Battery Cover .............................................................. 117

Removing the USB Cable Battery Cover ............................................................ 118

Soft Holster ................................................................................................................. 119

Using the Belt Clip ............................................................................................... 119

Using the Shoulder Strap .................................................................................... 121

Application Deployment........................................................................................... 122

Introduction ................................................................................................................. 122

Security ....................................................................................................................... 122

Secure Certificates ...................................................................................................... 122

Installing a Secure Certificate ..................................................................................... 122

Configuring Credential Storage Settings ............................................................. 123

Development Tools ..................................................................................................... 123

Android Application Development ....................................................................... 123

Development Workstation ............................................................................. 123

Target Device ................................................................................................ 123

EMDK for Android ............................................................................................... 124

StageNow ............................................................................................................ 124

MX Features ........................................................................................................ 124

GMS Restricted ............................................................................................. 125

ADB USB Setup .......................................................................................................... 125

Enabling USB Debugging ........................................................................................... 125

Table of Contents

9

Application Installation ................................................................................................ 126

Installing Applications Using the USB Connection .............................................. 126

Installing Applications Using the Android Debug Bridge ..................................... 126

Uninstalling an Application .................................................................................. 127

Performing a System Update ...................................................................................... 127

Downloading the System Update Package ......................................................... 127

Using ADB ........................................................................................................... 127

Verify System Update Installation ............................................................................... 128

Performing an Enterprise Reset .................................................................................. 128

Downloading the Enterprise Reset Package ....................................................... 129

Using ADB ........................................................................................................... 129

Performing a Factory Reset ........................................................................................ 130

Downloading the Factory Reset Package ........................................................... 130

Using ADB ........................................................................................................... 130

Storage .......................................................................................................................131

Random Access Memory ............................................................................................ 131

On Device Storage .............................................................................................. 132

Internal Storage ................................................................................................... 132

Enterprise Folder ................................................................................................. 132

App Management ........................................................................................................ 132

Viewing App Details .................................................................................................... 133

Managing Downloads ................................................................................................. 133

Maintenance and Troubleshooting ........................................................................ 134

Introduction ................................................................................................................. 134

Maintaining the Device ................................................................................................ 134

Battery Safety Guidelines ........................................................................................... 134

Long Term Storage ..................................................................................................... 135

Cleaning Instructions .................................................................................................. 135

Approved Cleanser Active Ingredients ................................................................ 135

Harmful Ingredients ............................................................................................. 136

Device Cleaning Instructions ............................................................................... 136

Special Cleaning Notes ....................................................................................... 136

Cleaning Materials Required ............................................................................... 136

Cleaning Frequency ............................................................................................ 137

Cleaning the Device ............................................................................................ 137

Housing ......................................................................................................... 137

Display .......................................................................................................... 137

Camera and Exit Window ............................................................................. 137

Cleaning Battery Connectors .............................................................................. 137

Cleaning Cradle Connectors ............................................................................... 137

Table of Contents

10

Troubleshooting .......................................................................................................... 138

Resetting the Device ........................................................................................... 138

Performing a Soft Reset ................................................................................ 138

Performing a Hard Reset .............................................................................. 138

Entering into Recovery Mode .............................................................................. 139

PS20 .................................................................................................................... 140

Cradles ................................................................................................................ 142

Specifications............................................................................................................ 143

Introduction ................................................................................................................. 143

Data Capture Supported Symbologies ................................................................ 143

Three Slot Cradle ................................................................................................ 143

Single Slot Cradle ................................................................................................ 144

PS20 Interface Connector Pin-Outs ............................................................................ 144

Cable Specifications ................................................................................................... 145

Power Supply Cable, Y-type ............................................................................... 145

Cradle Interconnection Cable .............................................................................. 145

Index

11

About This Guide

Configurations

This guide covers the following configurations:

Notational Conventions

The following conventions are used in this document:

Table 1

Configuration Radios Display Memory

Data Capture

Options

Operating

System

PS20 Base WLAN: 802.11

a/b/g/n/d/h/i/k/r/v/ac

WPAN: Bluetooth

v5.0

WVGA 4.0”

color

4 GB RAM/16

GB Flash

SE2100 Android

Open Source

Project

(AOSP)/

Google

Mobile

Services

(GMS)

9.0

PS20 Plus WLAN: 802.11

a/b/g/n/d/h/i/k/r/v/ac

WPAN: Bluetooth

v5.0

WVGA 4.0”

color

4 GB RAM/16

GB Flash

4 GB RAM/32

GB Flash

SE4710 +

Digimarc

Android

Open Source

Project

(AOSP)/

Google

Mobile

Services

(GMS)

9.0

About This Guide

12

• Bold text is used to highlight the following:

• Dialog box, window and screen names

• Drop-down list and list box names

• Check box and radio button names

• Icons on a screen

• Key names on a keypad

• Button names on a screen.

• Bullets (•) indicate:

• Action items

• Lists of alternatives

• Lists of required steps that are not necessarily sequential.

• Sequential lists (for example, those that describe step-by-step procedures) appear as numbered lists.

Service Information

If you have a problem with your equipment, contact Customer Support for your region. Contact information is

available at: www.zebra.com/support

.

When contacting support, please have the following information available:

• Serial number of the unit (found on manufacturing label)

• Model number or product name (found on manufacturing label)

• Software type and version number

Customer Support responds to calls by email or telephone within the time limits set forth in support

agreements.

If the problem cannot be solved by Customer Support, you may need to return the equipment for servicing and

will be given specific directions. We are not responsible for any damages incurred during shipment if the

approved shipping container is not used. Shipping the units improperly can possibly void the warranty.

If the device was purchased from a business partner, contact that business partner for support.

Software Versions

To determine the current software versions:

1. Go to Settings.

2. Touch System.

3. Touch About phone.

4. Scroll to view the following information:

•Model

• Android version

• Build number.

To determine the device serial number, touch About phone > Status.

• Serial number

13

Getting Started

Unpacking

Carefully remove all protective material from the device and save the shipping container for later

storage and shipping.

Verify that the box contains all the equipment listed below:

• PS20 (includes lithium-ion battery)

• Regulatory Guide

Inspect the equipment for damage. If you are missing any equipment or if you find any damaged

equipment, contact Support immediately. See Service Information on page 12 for contact information.

Removing the Screen Protection Film

A screen protection film is applied to the PS20 screen to protect the screen during shipping. To

remove the screen protector, carefully lift the thin film off the touch screen display.

Getting Started

14

Features

Figure 1 Features - Front View

Table 2 Features- Front View

Item Function

Microphone Use for audio input and SmartLens locationing. Allows shoppers to

speak to a store associate via push-to-talk or to a virtual assistant via

speech-to-text.

Camera With the front-facing camera, the device supports Visible Light

Communications (VLC) indoor positioning/locationing applications. In

addition, the camera is used for image/face recognition. Available on

Plus configurations.

LED Status Indicates the battery charge state while charging or the scan/decode

status.

Red: Barcode scan in progress (Scan key is pressed).

Single Green Blink: Successful decode.

Touch Screen Displays all information needed to operate the device.

Scan Key Use for trigger input for scanner or as a Select/Enter key.

Scan Key

Touch Screen

LED Status

Camera

Microphone

Getting Started

15

Figure 2 Features - Back and Side View

Table 3 Features-

Back and Side View

Status LED

The Status LED indicates imaging and charging status.

Item Function

Scan Exit

Window

Provides data capture using the scanner.

Speaker Provides audio output for video, music, notifications, and PTT.

Battery Cover Encloses the battery and attaches to the device’s handle.

Power/Cradle

I/OConnector

Provides charging via cradle and cradle communication to lock/unlock

the cradle slots. Use to perform a hard reset with the terminal reboot

tool.

Branding Plate

Slot

Provides space for custom logo.

Power Connector

Battery Cover

Speaker

Scan Exit

Window

Branding Plate Slot

Getting Started

16

Figure 3 PS20 Status LED

Scan Key

The Scan key operates the imager when a scanning application is active. When the PS20 is turned off, press

the Scan key for three seconds to power on the PS20.

Table 4 Status LED Indications

LED State Indication

Imaging

Off Normal operation or PS20 is turned off.

Red Imaging in progress (Scan key is pressed).

Single Green Blink Successful decode.

Charging (PS20 docked in cradle)

Off Power not applied to cradle.

PS20 not inserted properly.

Charging LED feature disabled.

Blinking Green Charging.

Solid Green Charging complete.

Blinking Red Charging error, for example:

Temperature is too low or too high.

Charging has gone on too long without completion (typically eight hours).

Status LED

Getting Started

17

Figure 4 Scan Key

Setting Up the Device

To start using the device for the first time:

• Charge the battery to at least 30% capacity.

NOTE: When the device is shipped from the factory, it is placed into Ship Mode, where the device enters its lowest possible

power state. The device can exit Ship Mode by docking it in a powered cradle or in a powered USB cable. Fully charging the

battery pack to 100% is recommended immediately after exiting ship mode to calibrate the state of charge.

Charging the Battery

Use one of the following accessories to charge the PS20.

NOTE: Ensure that you follow the guidelines for battery safety described in the PS20 Product Reference Guide.

Scan Key

Table 5 Charging Cradles

Description Part Number

Cables

DC

Cable

Interconnect

Cable

Extension

Cable

Single Slot Cradle CRD-MC18-1SLOT-01 CBL-DC-394A1-01

CBL-DC-393A1-02

CBL-DC-392A1-02

25-66431-01R

25-66430-01R

_____

High Density (HD) Three Slot Cradle

(Locking)

CRD-MC18-3SLCKH-01 CBL-DC-394A1-01

CBL-DC-393A1-02

CBL-DC-392A1-02

25-66431-01R

25-66430-01R

CBL-MC18-

EXINT1-01

High Density (HD) Three Slot Cradle

(Non-Locking)

CRD-MC18-SLOTH-01 CBL-DC-394A1-01

CBL-DC-393A1-02

CBL-DC-392A1-02

25-66431-01R

25-66430-01R

CBL-MC18-

EXINT1-01

Super High Density (HD) Three Slot

Cradle (Locking)

CRD-MC18-3SLCKS-01 CBL-DC-394A1-01

CBL-DC-393A1-02

CBL-DC-392A1-02

25-66431-01R

25-66430-01R

CBL-MC18-

EXINT1-01

Getting Started

18

1. To charge the battery, connect the charging accessory to the appropriate power source.

2. Insert the PS20 into a cradle. The PS20 turns on and begins charging.

Figure 5 Single Slot Cradle

Figure 6 Three Slot Cradle

Getting Started

19

The battery charges 0 to 90% depending on the following conditions, measured at room temperature:

• When connected to a 1.0 cradle (normal charge mode), charge time is less than four hours.

• When connected to a 1.5 cradle (fast charge mode), charge time is less than three hours.

NOTE: To charge the battery in the device, it is recommended to use a charging cradle instead of the USB cable, since it is

more time efficient.

Charging Temperature

Charge batteries in temperatures from 0°C to 40°C (32°F to 104°F). The device or cradle always performs

battery charging in a safe and intelligent manner. At higher temperatures (e.g. approximately +37°C (+98°F))

the device or cradle may for small periods of time alternately enable and disable battery charging to keep the

battery at acceptable temperatures. The device and cradle indicates when charging is disabled due to

abnormal temperatures via its LED.

LED Status Indicators

By default, the charging LED indication is disabled.

To enable the charging LED indication:

1. Go to Settings.

2. Touch Display.

3. Touch Charging LED. The option switch turns green.

4. Touch .

Table 6 LED Status Indicators

LED State Indication

Imaging

Off Normal operation or PS20 is turned off.

Red Imaging in progress (Scan key is pressed).

Single Green Blink Successful decode.

Charging (PS20 docked in cradle)

Off Power not applied to cradle.

PS20 not inserted properly.

Charging LED feature disabled.

Blinking Green Charging.

Solid Green Charging complete.

Blinking Red Charging error, for example:

Temperature is too low or too high.

Charging has gone on too long without completion (typically eight hours).

Getting Started

20

Replacing the Battery

To replace the battery:

1. Touch and hold the soft power button until the menu appears.

2. Touch Power Off.

3. Touch OK.

CAUTION: The PS20 must be off before removing the battery. Failing to turn off the PS20 before removing the battery may

damage the data stored on flash memory or corrupt the operating system files.

4. Loosen the captive screw that secures the battery cover, using a Phillips (PH00)screwdriver.

5. Lift the battery cover from the handle.

6. Inside the battery compartment, press down the plastic tab of the battery cable connector and slide it out of

the shrouded male pin connector.

7. Remove the battery from the battery compartment.

Figure 7 Remove the Battery

8. With the replacement battery, guide and press the battery cable connector into the shrouded male pin

connector inside the battery compartment. The connector is designed to only fit one way.

9. Place the battery inside the battery compartment.

10.Place the battery cover onto the handle.

11.Secure the battery cover with the screw, using a Phillips (

PH00)screwdriver.

Press down plastic tab to release

Page is loading ...

Zebra PS20 Product Reference Guide

Zebra PS20 Product Reference Guide

Related papers

Other documents